CN216916643U

CN216916643U - Packaging sheet and packaging structure

Info

Publication number: CN216916643U
Application number: CN202122873972.XU
Authority: CN
Inventors: 黎梓锋; 龚建朋; 雍朝彬; 陈泽波; 侯林芳
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-07-08
Anticipated expiration: 2031-11-22

Abstract

The utility model provides a packaging sheet and a packaging structure, relates to the technical field of packaging, and solves the technical problems of multiple types and numbers of packaging structures and low packaging efficiency. The packaging sheet comprises a sheet body, wherein the sheet body is provided with four functional parts, crease lines are arranged in each functional part, and the four functional parts can be folded and connected for multiple times to form a whole packaging structure; the packaging structure comprises a pre-folded packaging body formed by integrally folding a packaging sheet, and the pre-folded packaging body is unfolded and three-dimensionally formed to form the packaging structure. According to the utility model, the air port component is packaged by using the paper-formed pre-folded packaging body, so that the number of packaging pieces is reduced, and the packaging efficiency of products is improved.

Description

Packaging sheet and packaging structure

Technical Field

The utility model relates to the technical field of packaging, in particular to a packaging sheet and a packaging structure.

Background

The air inlet component of the air pipe machine is integrally long and narrow, and air inlet products in the market are usually packaged and protected by a packing mode of local packaging of a left liner, a middle liner, a right liner and a left liner or a right liner. However, in most cases, these packages are separated and distributed independently, and there is no connection with other packages, and the number of types is large, which causes the conditions of many procedures and low overall efficiency when the tuyere part is packed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a packaging sheet and a packaging structure, and aims to solve the technical problems of multiple types and quantities of packaging structures and low packaging efficiency in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the packaging sheet provided by the utility model comprises a sheet body, wherein the sheet body is provided with four functional parts, each functional part is internally provided with a crease line, and the four functional parts can be folded and connected for multiple times to form a whole packaging structure.

As a further improvement of the utility model, locking structures are also arranged in the four functional parts.

As a further improvement of the utility model, the locking structure comprises a lock catch and a lock hole which are arranged in a matched manner, and further comprises a bolt opening.

As a further improvement of the utility model, the four functional parts are respectively a first long-edge protection chamber part, a first short-edge protection chamber part, a second long-edge protection chamber part and a second short-edge protection chamber part which are arranged in sequence.

As a further improvement of the utility model, the first long-edge protection cavity part and the second long-edge protection cavity part have the same structure, and respectively comprise an upper flap plate, a lower flap plate and a first edge bonding plate which are connected by crease lines, wherein the specifications of the upper flap plate and the lower flap plate are the same.

As a further improvement of the utility model, the upper flap comprises an outer wall panel and a top wall panel connected by crease lines, and the lower flap comprises an inner lining panel, a first flap, a second flap and a third flap connected by crease lines; the first folded plate is provided with the lock catch and the lock hole; the second folded plate, the third folded plate and the first edge bonding plate are provided with the bolt openings; the width of the first sticky edge plate is not more than that of the third folded edge.

As a further improvement of the utility model, at least one support plate is arranged on the top wall plate, and each support plate is connected with the top wall plate through a crease line and can be folded to be perpendicular to the plate surface of the top wall plate.

As a further improvement of the present invention, the support plate is an L-shaped structure, and includes a first support plate and a second support plate extending outward from an end of the first support plate, and a width of the second support plate is smaller than a width of the first support plate.

As a further improvement of the utility model, all the support plates are arranged in pairs, and two support plates in each pair are mirror images of the left and right.

As a further improvement of the utility model, the lock catch is arranged on the first supporting sheet, and the lock hole is arranged on the inner lining plate.

As a further improvement of the present invention, the crease line between the first flap and the second flap is an outwardly folded crease line.

As a further improvement of the utility model, the first short-edge protection cavity part and the second short-edge protection cavity part are the same in shape and respectively comprise an upper connecting plate, a lower connecting plate and a second edge bonding plate which are connected by crease lines, and the heights of the upper connecting plate and the lower connecting plate are equal; and an edge connecting strip is further arranged on the upper connecting plate of the second short edge protection cavity part.

As a further improvement of the utility model, said upper plate comprises an outer wall strip and a top wall strip connected by crease lines; the lower connecting plate comprises an inner lining strip, a first folding strip, a second folding strip and a third folding strip which are connected through a crease line; the lock hole is formed in the outer wall strip, and the lock catch is arranged on the first folding strip; the width of the second sticky edge plate is not more than the width of the third folding strip.

As a further improvement of the utility model, the sheet body is made of corrugated paper.

The utility model provides a packaging structure which comprises a pre-folded packaging body formed by integrally folding and molding a packaging sheet, wherein the pre-folded packaging body is unfolded and formed in a three-dimensional mode to form the packaging structure.

As a further improvement of the utility model, the packaging structure is a cuboid structure, and a containing cavity is arranged inside the packaging structure; the containing cavity is sequentially surrounded with a first long edge protection cavity, a first short edge protection cavity, a second long edge protection cavity and a second short edge protection cavity.

As a further improvement of the utility model, the accommodating cavity is of a step structure and comprises an upper cavity and a lower cavity, and the specification of the upper cavity is smaller than that of the lower cavity.

As a further improvement of the utility model, a high-elasticity material is filled between the upper cavity and the lower cavity.

As a further improvement of the utility model, the high-elasticity material is foam or pearl wool.

As a further improvement of the utility model, the width of the upper cavity is greater than the length of the first folding strip in the second short edge protection cavity part after the first short edge protection cavity part; the width of the lower cavity is larger than the length of the top wall strip in the first long-edge protection cavity part or the second long-edge protection cavity part.

As a further improvement of the utility model, the packaging structure also comprises a bottom support, and the pre-folded packaging body is covered on the top of the bottom support after being unfolded and three-dimensionally formed.

Compared with the prior art, the utility model has the following beneficial effects:

according to the packaging sheet provided by the utility model, the four functional parts are arranged on the packaging sheet in a cutting mode, and the four functional parts form four protection cavities of a packaging structure after being folded and locked for multiple times, so that the air port component is packaged by using a pre-folded packaging body formed by paper, the number of packaging pieces is reduced, and the packaging efficiency of products is improved; according to the packaging structure provided by the utility model, from the viewpoints of reducing the packaging difficulty of the air port component and improving the packaging efficiency and convenience, the packaging sheet is firstly utilized for pre-folding to form a pre-folded packaging body with a planar structure for storing and transporting the packaging structure, and when the packaging structure is used, the pre-folded packaging body is directly utilized for unfolding, bending and clamping, so that the packaging structure with a three-dimensional structure is formed, and the packaging efficiency and convenience are improved; reduce the number of packages and the degree of dispersion.

The packaging structure provided by the utility model can be used for packaging the non-panel side of the air port part of the air duct machine to fix and buffer the air port part, and can also be applied to the panel side of the air port of the air duct machine to fix and buffer the air port part, and the incoming materials can be fed in a pre-folded flat plate mode during transportation, so that the transportation efficiency is improved, and the incoming material breakage rate is reduced; and (4) carrying out three-dimensional forming before packaging, and finally sending the product to a production line for direct packaging.

When the packaging structure provided by the utility model is matched with the bottom support packaging structure for packaging, the product can be packaged to the maximum extent only by completing the action of a plurality of translation covering degrees of freedom from top to bottom, so that the actions of other degrees of freedom such as front and back covering, left and right sleeving, twisting and the like are avoided, the overall packaging convenience is improved, and the packaging difficulty is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the construction of the packaging sheet of the present invention;

FIG. 2 is a drawing of the folding process of the packaging sheet of the present invention into pre-folded packages;

FIG. 3 is a line frame diagram of a pre-folded package in the packaging configuration of the present invention;

FIG. 4 is an effect diagram of the packaging structure of the present invention;

FIG. 5 is a wire frame diagram of the packaging structure of the present invention;

FIG. 6 is a schematic view of the packaging structure of the present invention in use;

fig. 7 is a diagram of the packaging structure of the present invention.

In the figure 1, a first long-edge protection chamber part; 11. an upper flap; 111. an outer wall panel; 112. a top wall panel; 114. a support plate; 1141. a first support sheet; 1142. a second support sheet; 12. a lower flap; 121. an inner liner plate; 122. a first folded plate; 123. a second folded plate; 124. a third folded plate; 13. a first edge bonding plate; 2. a first short-side protection chamber part; 21. an upper connecting plate; 211. an outer wall strip; 212. a top wall strip; 22. a lower connecting plate; 221. an inner lining strip; 222. a first folding bar; 223. a second folding strip; 224. a third folding strip; 23. a second edge bonding plate; 24. edge connecting strips; 3. a second long-side protection chamber part; 4. a second short-side protection chamber part; 10. a crease line; 20. locking; 30. a lock hole; 40. a bolt port; 100. a packaging structure; 200. an accommodating chamber; 300. a first long-edge protection cavity; 400. a first short edge protection chamber; 500. a second long-edge protection cavity; 600. a second short-side protection cavity; 700. and a bottom support.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

As shown in fig. 1, the present invention provides a packaging sheet, which includes a sheet body, the sheet body has four functional portions, each functional portion has a crease line 10, and the four functional portions can be folded and connected for multiple times to form a whole packaging structure.

Specifically, the sheet body can be folded into a complete packaging structure in a three-dimensional manner after being subjected to multiple folding steps, and a product to be packaged is packaged through the packaging structure, is fixed and plays a role in buffering in the fixing process; because this packaging structure is by integrative folding forming of sheet body to reduce the quantity of package, also shortened packing installation time greatly, improved packing efficiency.

It should be noted that in all the drawings of the present invention, the dashed lines indicate the inwardly folded crease lines 10, and the dotted lines indicate the outwardly folded crease lines 10.

Specifically, the four functional parts are internally provided with locking structures, and the sheets which are folded and attached together can be locked through the locking structures.

Optionally, the locking structure includes a lock catch 20 and a lock hole 30, which are configured in a matching manner, and further includes a latch opening 40. Further, the locking buckle 20 is locked by being snapped into the locking hole 30, and a part of the sheet material is inserted into the latch opening 40.

Further, the four functional parts are respectively a first long-edge protection chamber part 1, a first short-edge protection chamber part 2, a second long-edge protection chamber part 3 and a second short-edge protection chamber part 4 which are arranged in sequence.

As shown in fig. 5, that is, the first long-edge protection chamber part 1 can be folded and locked to enclose a first long-edge protection chamber in the packaging structure; the first short-edge protection cavity part 2 can be folded and locked to form a first short-edge protection cavity in the packaging structure; the second long-edge protection cavity part 3 can be folded and locked to form a second long-edge protection cavity in the packaging structure; second minor face protection chamber portion 4 can enclose the second short edge protection chamber in the synthetic packaging structure after folding and locking, and first long edge protection chamber sets up with the long edge protection chamber relative interval in second in addition, forms in the centre and holds the chamber, and first short edge protection chamber and second minor face protection chamber enclose respectively and establish the both ends in first long edge protection chamber and second long edge protection chamber to finally enclose into a packaging structure who has the closed chamber that holds.

As an optional embodiment of the present invention, the first long-side protection chamber part 1 and the second long-side protection chamber part 3 have the same structure, and it should be noted here that the structure is completely the same, which means that the shape and the specification are the same, in this embodiment, the first long-side protection chamber part 1 is a rectangular structure; the first long-edge protection chamber part 1 and the second long-edge protection chamber part 3 respectively comprise an upper flap 11, a lower flap 12 and a first edge bonding flap 13 which are connected by a crease line 10, and the specifications of the upper flap 11 and the lower flap 12 are the same. It should be noted here that the upper flap 11 and the lower flap 12 can be folded in half along the crease line 10 and then overlapped and pasted together, at this time, the upper flap and the lower flap are completely aligned, at this time, the first edge-bonding plate 13 is folded inwards along the crease line 10 and pressed at the lower end position of the lower flap 12, and the upper flap 11 and the lower flap 12 are fixed after being folded in half by smearing glue or directly pressing.

Optionally, the upper panel 11 comprises an outer wall panel 111, a top wall panel 112 connected by crease lines 10, and the lower panel 12 comprises an inner liner panel 121, a first fold panel 122, a second fold panel 123 and a third fold panel 124 connected by crease lines 10; the first folded plate 122 is provided with a lock catch 20 and a lock hole 30; the second folding plate 123 and the third folding plate 124 are provided with a bolt opening 40; the first edge bonding plate 13 is provided with a bolt opening 40; the width of the first hem panel 13 is not greater than the width of the third flap 124.

Further, the crease line 10 between the outer wall panel 111 and the top wall panel 112 is an inner crease, the crease line 10 between the top wall panel 112 and the first binding panel 13 is also an inner crease, the crease line 10 between the inner liner panel 121 and the outer wall panel 111 is an inner crease, the crease line 10 between the inner liner panel 121 and the first crease panel 122 is an inner crease, and the crease line 10 between the first crease panel 122 and the second crease panel 123 is an outer crease; the crease line 10 between the second and

third panels

123, 124 is an internal crease.

Latch openings 40 are provided at opposite ends of the third flap 124 and the latch openings 40 extend from the edge of the third flap 124 to the junction of the second flap 123 and the first flap 122. Because the first edge bonding plate 13 needs to be folded and then connected with the third folding plate 124, the corresponding position of the first edge bonding plate 13 is also provided with the plug pin opening 40, so that the plug pin opening 40 cannot be shielded after the first edge bonding plate 13 is folded and connected with the remaining third folding plate 124.

Optionally, in order to ensure the strength of the long-edge protection cavity to prevent the package from collapsing after being pressed, at least one support plate 114 is disposed on the top wall plate 112, and each support plate 114 is connected to the top wall plate 112 through a crease line 10 and can be folded to be perpendicular to the surface of the top wall plate 112. After the first long-edge protection chamber part 1 is folded to complete three-dimensional forming, the top wall plate 112 is horizontally arranged at the top, and the supporting plate 114 can be turned over to be perpendicular to the top wall plate 112, so that the top wall plate 112 can be effectively supported by the supporting plate 114, and the strength of the packaging structure is improved.

Further, the supporting plate 114 is an L-shaped structure, and includes a first supporting sheet 1141 and a second supporting sheet 1142 extending outward from the end of the first supporting sheet 1141, and the width of the second supporting sheet 1142 is smaller than the width of the first supporting sheet 1141, so as to form a step structure, and after the folding forming, the first supporting sheet 1141 and the second supporting sheet 1142 are both downward.

Alternatively, all of the support plates 114 are arranged in pairs, with the two support plates 114 in each pair being mirror images of each other. The number of the supporting plates 114 can be set according to the length of the packaging structure, and is not limited to the two pairs of supporting plates 114 shown in the drawings of the present embodiment, and of course, when the packaging structure is short, the supporting plates 114 may not be provided.

Further, the first supporting piece 1141 is provided with a locking buckle 20, and the inner lining plate 121 is provided with a locking hole 30.

Optionally, the crease line 10 between the first folding plate 122 and the second folding plate 123 is an outwardly turned crease line.

As an alternative embodiment of the present invention, the first short side protection chamber part 2 and the second short side protection chamber part 4 have the same shape, and it should be noted that the shapes referred to herein are the same, which means the same shape, but have different specifications, wherein the first short side protection chamber part 2 has a larger specification than the second short side protection chamber part 4; the first short-edge protection cavity part 2 and the second short-edge protection cavity part 4 respectively comprise an upper connecting plate 21, a lower connecting plate 22 and a second edge bonding plate 23 which are connected by a crease line 10, and the heights of the upper connecting plate 21 and the lower connecting plate 22 are equal; the upper joint plate 21 of the second short edge protection chamber part 4 is also provided with an edge joint strip 24. Specifically, the edge strip 24 is connected to the side of the upper plate 21, that is, the side away from the second long-side protection chamber 3. The length of the edge strip 24 is equal to the height of the outer wall panel 111.

Optionally, upper panel 21 includes an outer wall strip 211 and a top wall strip 212 connected by crease lines 10; lower panel 22 comprises inner liner strip 221, first fold strip 222, second fold strip 223, and third fold strip 224 connected by crease line 10; the outer wall strip 211 is provided with a lock hole 30, and the first folding strip 222 is provided with a lock catch 20; the width of the second bead bond panel 23 is no greater than the width of the third fold strip 224.

Specifically, it should be noted here that the lock hole 30 on the left side of the first flap 122 of the first long-side protection chamber section 1 is used for being clamped with the lock catch 20 on the right side of the first fold 222 of the second short-side protection chamber section 4, and the lock hole 30 on the right side of the first flap 122 of the first long-side protection chamber section 1 is used for being clamped with the lock catch 20 on the left side of the first fold 222 of the first short-side protection chamber section 2; the lock catch 20 on the left side of the first folded plate 122 of the first long-side protection chamber part 1 is used for being clamped with the lock hole 30 on the right side of the outer wall strip 211 of the second short-side protection chamber part 4; the lock catch 20 on the right side of the first folded plate 122 of the first long-side protection chamber part 1 is used for being clamped with the lock hole 30 on the left side of the outer wall strip 211 of the first short-side protection chamber part 2; the left bolt openings 40 on the second folded plate 123 and the third folded plate 124 of the first long edge protection chamber part 1 are used for inserting the second binding plate 23 in the second short edge protection chamber part 4; the latch opening 40 on the right side of the second flap 123 and the third flap 124 of the first long side shelter section 1 is used for the insertion of the second binding panel 23 in the first short side shelter section 2.

The lock hole 30 on the left side of the first folded plate 122 of the second long-side protection chamber part 3 is used for being clamped with the lock catch 20 on the right side of the first folded strip 222 of the first short-side protection chamber part 2, and the lock hole 30 on the right side of the first folded plate 122 of the second long-side protection chamber part 3 is used for being clamped with the lock catch 20 on the left side of the first folded strip 222 in the second short-side protection chamber part 4; the lock catch 20 on the left side of the first flap 122 of the second long-side protection chamber part 3 is used for being clamped with the lock hole 30 on the right side of the outer wall strip 211 of the first short-side protection chamber part 2; the latch 20 on the right side of the first flap 122 of the second long-side protective chamber part 3 is used for being clamped with the latch hole 30 on the left side of the outer wall strip 211 of the second short-side protective chamber part 4; the bolt openings 40 on the left side of the second folded plate 123 and the third folded plate 124 of the second long edge protection chamber part 3 are used for inserting the second binding plate 23 in the first short edge protection chamber part 2; the latch opening 40 on the right side of the second flap 123 and the third flap 124 of the second long-side pocket part 3 is used for inserting the second binding flap 23 in the second short-side pocket part 4.

Specifically, the sheet body is made of single corrugated paper.

As shown in fig. 6 and 7, the present invention provides a packaging structure, which includes a pre-folded packaging body formed by integrally folding a packaging sheet, and the pre-folded packaging body is unfolded and three-dimensionally formed to form a packaging structure 100.

Further, the packaging structure 100 is a rectangular parallelepiped structure, and has an accommodating cavity 200 therein; the first long-edge protection cavity 300, the first short-edge protection cavity 400, the second long-edge protection cavity 500 and the second short-edge protection cavity 600 are sequentially arranged around the accommodating cavity 200.

It should be noted that the first long-side protection cavity part 1 is folded to form a first long-side protection cavity 300, and the second long-side protection cavity part 3 is folded to form a second long-side protection cavity 500; the first short-edge protection cavity part 2 is folded to form a first short-edge protection cavity 400; the second short-side protection cavity part 4 is folded to form a second short-side protection cavity 600. And the adjacent two protection cavities are connected and fixed by clamping the lock catch 20 and the lock hole 30 and inserting the lock catch into the bolt hole 40.

Because the lower flap of the long-edge protection cavity part is composed of a plurality of sections of folded plates, after the folded plates are folded for a plurality of times, the accommodating cavity 200 is of a step structure and comprises an upper cavity and a lower cavity, and the specification of the upper cavity is smaller than that of the lower cavity.

A high-elasticity material is filled between the upper cavity and the lower cavity; the high-elasticity material is foam or pearl wool.

Furthermore, the width T of the upper cavity is greater than the length T of the first folding strip, that is, T > T; the lower cavity width D is greater than the length D of the top wall strip, that is D > D.

Specifically, the packaging structure 100 further includes a bottom support 700, and the pre-folded package body is unfolded and three-dimensionally formed and then covered on the top of the bottom support 700.

The packaging structure provided by the utility model can be used for packaging the non-panel side of the air port part of the air duct machine to fix and buffer the air port part, and can also be applied to the panel side of the air port of the air duct machine to fix and buffer the air port part, and the incoming materials can be fed in a pre-folded flat plate mode during transportation, so that the transportation efficiency is improved, and the incoming material breakage rate is reduced; and before packaging, the three-dimensional forming can be carried out, and finally the product is sent to a production line for direct packaging.

When the packaging structure provided by the utility model is matched with the bottom support packaging structure for packaging, the product can be packaged to the greatest extent by only completing the actions of a plurality of translation cover closing degrees of freedom from top to bottom, so that the actions of other degrees of freedom such as front and back cover closing, left and right sleeving, twisting and the like are avoided, the overall packaging convenience is improved, and the packaging difficulty is reduced.

The process of folding the pre-folded package is as follows, as shown in fig. 2 and 3, the solid lines being contour lines or cut lines, the dashed lines being inner fold crease lines, the dash-dot lines being outer fold crease lines, the arrows indicating the folding direction. The pre-folding and pre-adhering process is indicated from top to bottom, and finally the flat pre-folding packaging body is folded into a flat plate shape in the incoming material state during storage and transportation. B, C, D, E in the figure are respectively an upper flap and an upper connecting plate corresponding to four protection cavities, B ', C ', D ' and E ' are a lower flap and a lower connecting plate corresponding to four protection cavities, A is an edge connecting strip, A-A ', B-B ', C-C ', D-D ' and E-E ' represent corresponding pre-adhesive surfaces formed after the upper flap and the lower flap, the upper connecting plate and the lower connecting plate and the edge connecting strip and the upper flap are adhered, and locking limiting between parts in the packaging structure can be realized by respectively buckling the lock catch 20 into the lock hole 30 and locking the lower connecting plate into the bolt hole 40.

When the packaging structure is fed, the upper flap or the upper connecting plate of the protective cavity on each side needs to be pre-adhered to the lower flap or the lower connecting plate, if B and B 'are adhered together to form B-B', and C-C ', D-D', E-E 'of the same type, the edge strip A is pre-adhered and fixed on A' to form a pre-folded packaging body, and the pre-folded packaging body is directly folded into a formed packaging structure in the later period. Before formal packaging, a pre-folded packaging body needs to be folded into a three-dimensional structure: firstly, the whole pre-folded packaging body is folded into a structure shaped like a Chinese character 'hui' (as shown in figure 4), then the whole long-edge protection cavity is folded downwards according to a crease line to form a 7-shaped three-dimensional structure (as shown in an enlarged structure II in figure 4). Then, the long-edge protection cavity is fixed on a side plate of the narrow-edge protection cavity by using the lock catch (see an IV amplification structure in figure 4), the support plate (see figure 4) is folded into the cavity synchronously according to the indentation indication direction, and the lock catch on the plate is clamped into the lock hole for locking, so that the shape stability of the formed long-edge protection cavity can be maintained in the two steps.

The forming of the narrow edge protection cavity is carried out after the forming of the long edge protection cavity, but the turning directions are just opposite: the whole body of the lower connecting plate needs to be turned upwards according to a crease line to be folded into a three-dimensional 7-shaped structure (see a III enlarged structure in fig. 2), and the lock catch also needs to be clamped into a lock hole of the long-edge protection cavity (see the III enlarged structure in fig. 4) in the folding process, and meanwhile, the lower connecting plate C 'and the lower connecting plate E' need to be synchronously inserted into corresponding bolt openings to ensure that the narrow-edge protection cavity cannot be easily deformed. (see IV in FIG. 4 for an enlarged structure)

In order to ensure the smooth operation of the upward folding of the narrow-edge protection cavity, the widest width of the upper flap of the narrow-edge protection cavity, i.e. the length T of the first folding strip, is slightly smaller than the shortest distance between the two long-edge protection cavities, i.e. the upper cavity width T (specifically characterized by the distance between the two outward convex parts of the cavity shaped like a Chinese character '7'), i.e. T > T. The width of the lower flap, i.e. the length D of the top wall strip, corresponding to the width of the lower flap, needs to be smaller than the distance between the concave parts in the long-edge protection cavity, i.e. the width D of the lower cavity, i.e. D < D.

After actual folding and forming, the lower connecting plate-bolt opening, the lock catch-lock hole and other locking structures limit the front-back, up-down and left-right displacement of each protection cavity. The mutual locking among a plurality of paperboards can ensure that the fixed structure cannot be easily deformed after the three-dimensional forming. After the pre-folding is finished, the pre-folded packaging body is directly covered on the air port component after being unfolded and is fixed, and then the next procedure can be carried out (see figure 7).

During actual production, the design length of the long-edge protection cavity is mainly determined by the length of the non-panel side of the air opening, and under the condition that the length of the air opening is shorter, the number of the supporting plates can be reduced, and even the supporting plates can not be used directly. In this case, the pre-folding step is also reduced.

The packaging structure can also be used on the package on the side of the tuyere panel, but because the tuyere panel is usually placed downwards, in order to ensure that the tuyere component is not damaged under the condition of falling impact, the distance between the 7-shaped protruding part and the concave part of the cavity can be correspondingly increased, and high-elasticity materials such as pearl wool, foam and the like are added to enhance the buffer property of the tuyere component.

Taking the tuyere component of the air duct machine as an example, the packaging structure mainly has the functions of providing buffer protection, pressure bearing and limiting for the non-panel side (namely the back side of the tuyere) of the tuyere. The reason that a plurality of supporting plates are added into the long-edge protection cavity is to ensure that the central part of the cavity still has good bending strength, top surface resistance and side impact resistance even under the condition that the length span of the cavity is large. The whole single corrugated cardboard integrated into one piece that adopts of packaging structure lies in avoiding and reducing because too much and the structure of package quantity is too similar the recognition cost and the assembly cost on the time that brings.

It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the utility model and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A packaging sheet is characterized by comprising a sheet body, wherein the sheet body is provided with four functional parts, each functional part is internally provided with a crease line, and the four functional parts can be folded and connected for multiple times to form a whole packaging structure; the four functional parts are internally provided with locking structures; the locking structure comprises a lock catch and a lock hole which are arranged in a matched manner, and further comprises a bolt opening; four function portion is first long limit protection chamber portion, first minor face protection chamber portion, the long limit protection chamber portion of second and the short side protection chamber portion of second that sets gradually respectively.

2. The packaging sheet according to claim 1, wherein the first long-side protection cavity portion and the second long-side protection cavity portion are identical in structure and each comprise an upper flap, a lower flap and a first edge-bonding flap which are connected by crease lines, and the upper flap and the lower flap are identical in specification.

3. The packaging sheet of claim 2 wherein the upper flap comprises an outer wall panel and a top wall panel connected by crease lines and the lower flap comprises an inner lining panel, a first flap, a second flap, and a third flap connected by crease lines; the first folded plate is provided with the lock catch and the lock hole; the second folded plate, the third folded plate and the first edge bonding plate are provided with the bolt openings; the first adhesive flap width is not greater than the third flap width.

4. A packaging sheet according to claim 3 wherein the top wall panel is provided with at least one support panel, each support panel being connected to the top wall panel by a crease line and being foldable to be perpendicular to the top wall panel face.

5. A packaging sheet according to claim 4 wherein the support panel is of L-shaped configuration comprising a first support panel and a second support panel extending outwardly from an end of the first support panel, the second support panel having a width less than the width of the first support panel.

6. A packaging sheet according to claim 4, wherein all the support plates are arranged in pairs, the two support plates in each pair being mirror images of each other.

7. A packaging sheet material according to claim 5 wherein the first support panel is provided with the catch and the inner liner panel is provided with the locking aperture.

8. The packaging sheet of claim 3 wherein the crease line between the first flap and the second flap is an outwardly turned crease line.

9. The packaging sheet according to claim 1, wherein the first short edge guard chamber portion and the second short edge guard chamber portion are identical in shape and each include an upper plate, a lower plate and a second adhesive edge plate connected by crease lines, the upper plate and the lower plate being equal in height; and an edge connecting strip is also arranged on the upper connecting plate of the second short-edge protection chamber part.

10. The packaging sheet material of claim 9 wherein the upper panel comprises an outer wall strip and a top wall strip connected by crease lines; the lower connecting plate comprises an inner lining strip, a first folding strip, a second folding strip and a third folding strip which are connected through crease lines; the lock hole is formed in the outer wall strip, and the lock catch is arranged on the first folding strip; the width of the second sticky edge plate is not more than the width of the third folded strip.

11. A packaging sheet material as in claim 1 wherein the sheet material body is corrugated paper.

12. A packaging structure comprising a pre-folded package formed by integrally folding the packaging sheet according to any one of claims 1 to 11, said pre-folded package being unfolded and three-dimensionally formed to form said packaging structure.

13. The packaging structure of claim 12, wherein the packaging structure is a rectangular parallelepiped structure having a receiving cavity therein; the containing cavity is sequentially surrounded with a first long edge protection cavity, a first short edge protection cavity, a second long edge protection cavity and a second short edge protection cavity.

14. The packaging structure of claim 13, wherein the receiving cavity is a stepped structure comprising an upper cavity and a lower cavity, the upper cavity having a smaller gauge than the lower cavity.

15. The packaging structure of claim 14, wherein an elastomeric material is further filled between the upper chamber and the lower chamber.

16. The packaging structure of claim 15, wherein the elastomeric material is foam or pearl wool.

17. The packaging structure of claim 14, wherein the upper cavity width is greater than a length of the first fold in the second short edge guard cavity portion after the first short edge guard cavity portion; the width of the lower cavity is larger than the length of a top wall strip in the first long-edge protection cavity part or the second long-edge protection cavity part.

18. The packaging structure of claim 12, further comprising a bottom support, wherein the top of the bottom support is covered by the unfolded and three-dimensionally shaped pre-folded packaging body.